Networking :: How To Handle Unmanaged Switch

May 10, 2010

I have seen there are some tricks to handle transparents switches using Nagios. Does anybody know if it is possible to handle unmanaged switches connected in daisy chain?In my network I have some devices connected in this way [switch]--[dev_1]--[dev_2]--[dev_3]

where "switch" is a managed switch" and dev_i is a device with an unmanaged switch inside (no snmp available). All the devices have an IP address. Is it possible to get the network topology with Nagios?

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Ubuntu Networking :: Network Manager Was Unmanaged. Got That Message When Clicked The Icon At The Right-bottom Bar?

May 8, 2010

language-pack-en, language-pack-en-base, language-pack-kde-en, language-pack-kde-en-base, libsoup2.4-1, libsoup-gnome2.4-1, pm-utils today on my laptop. Some hours later, I had to force the computer to shut down by pressing the power button, since it got totally lagged when I started it after an automatic sleep due to no power left. I started it, logged in and saw that the network manager was unmanaged. I got that message when I clicked the icon at the right-bottom bar.

So, I tried with "ifconfig" in a Terminal, as root.Therefor, I did "sudo ifconfig eth1 up", and the same with eth0. The network manager did not work anyways. I killed it using "sudo killall -9 knetworkmanager" and started it with "knetworkmanager" from the Terminal. The icon got removed and it appeared again, but nothing changed - it said "network manager disables", as before.I logged off and select "Restart X server" from the login screen. I logged in again and tried. Didn't work. When I restarted my computer I saw that eth0 and eth1 was down again. I took them up and then I checked the hardware settings. I saw that I could use either KNetworkManager, Fake Net or Wicd. I tried to locate if I had Wicd or Fake Net installed, but I hadn't.

Neither the wireless or the wired connection works now. I'd like to know how to fix the Network Manager, or whatever is wrong. Also, I'd like to know if I can install Wicd using a CD or something. Maybe Wicd works better, I have no idea. I'm using Kubuntu 10.04, the final release.

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OpenSUSE Wireless :: Icon Showing As 'unmanaged'

Aug 2, 2010

I set up a friend's laptop with opensuse 11.3 yesterday and everything was working fine. He has been playing about with it today and now cannot connect to his wireless access point.

It was set up to automatically connect to the wireless network but now the wireless icon (bottom right hand corner of the screen) is shown as 'unmanaged'.

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Networking :: Telnet - Handle Control C ?

Aug 22, 2010

I am trying to use telnet from linux to connect to the port specified by me and trying to handle control C. But once Ctrl C is pressed the output on the client side stops showing. The server sends data but client doesnt print the same.

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Networking :: Nagios - How To Handle Transparent Switches

Jan 26, 2010

I'm configuring Nagios at the moment, but I'm doubting my approach to transparent switches a bit. It seems from reading the documentation that Nagios wants me to ignore transparent switches, although I also doubt this interpretation of mine.

A little example, a VPN:
Code:
demarcation point
|
[router]
/
[switch][switch]
| / |
[7 clients] [switch] [switch]
/ |
[6 clients] [4 clients] [5 clients]

As you can see, there are 22 clients connected to the router. Since switches don't have an address, they cannot be measured. But if I ignore the switches, the schema is an oversimplified picture of reality. So what I'm looking for is a way to display the switches, even though they don't have an address. What I did was, I created the switches as where they proper fully featured ones, and listening to 127.0.0.1 as address. Luckily, this tricked Nagios. And it works, but it's not very elegant. Is there a better way to approach this pseudo-problem? Perhaps a build-in I overlooked?

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Networking :: Vpn Server - Handle Different Nets Each Separated From The Other

Apr 2, 2011

what kind of dist/software would you recomend to use for a a vpn server that can handle 10 diffrent nets each seperated from the other if i connect with user1 i get on net1 and user2 gets on net2 the vpn server is always connected to the other location at all time i just want to be able to conenct in to my the net i want to the reason i dont want to go Destination is that the vpn server is gonna handle otherstuff that the nets will be conencted to input

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Fedora Networking :: Fc14 Do Not Handle Nis Info Correctly

Jul 12, 2011

fc14 do not handle nis info correctly when showing my network homedir. It is shown as "nobody nobody". Local files are shown with correct UID:GID

When I log in on an RedHat el5 machine (on the same network), every thing is ok, but when I log in on a fc14 machine my network homedir files are shown as "nobody nobody"

My homedir is placed on a REDHat el6 and using nfsv4

Does anyone have a clue as to where configuartion can be changed?

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Networking :: Handle Parts Of Public Domain Behind A Router?

Jun 3, 2010

I have a registered domain (let say domain.com ) with a web server (www.domain.com) hosted somewhere online.

I handle the mail part in my private network, by giving the MX my WAN IP (111.222.333.444 )and NAT routing mail stuff to the mail server (10.7.167.3) It works fine.

I will have to handle sub-domains (foo.domain.com & bar.domain.com) and also another domain (anotherdomain.com) in my network. In that case NAT routing isn't going to work ...

What do I need to set this up ? I guess I need a DNS server in my network but I'm not sure if there won't be a conflict somewhere with the Registrar's DNS and mine. Or do I have to take the whole DNS of my domain on this new server and make it half public/half private in some way ?

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Networking :: Using Ip Tables And Rules, Will Be Able To Make All Three Of These Able To Handle Traffic?

Mar 22, 2011

I have a machine with 3 internet facing nics, all of which have static IP's. The IP's are all in the same subnet, and use the same default gateway.Using ip tables and rules, will I be able to make all three of these able to handle traffic?I have the following configured, but it doesn't appear to work:

# ip rule
0:from all lookup local
500:from 72.43.220.146/29 lookup 1

[code].....

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Ubuntu Networking :: Handle The Node Users Login With Permission?

Jul 16, 2010

i have a ubuntu server and no of nodes.give me any suggesions for how to handle the node users login with my permission?.i mean than they can switching on and boot the system but the system want to stay in unusable stage.After getting my permission they can operate the system.

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Hardware :: Replace Fibre Channel Switch In CentOS5.3 (cluster) For Regular Switch / Hub?

Jul 28, 2009

Can the fibre channel switch in the centOS5.3 cluster edition be switched for a regular router or hub?
If so how would one do this? If not why does the switch have to be fibre channel?

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CentOS 5 Networking :: Tracert Cannot Handle "host" Cmdline Arg Wp.pl On Position 1 (argc 1)?

Sep 2, 2010

I would like to secure my dhcp server against mac spoofing. I have two nics:eth0 -10.10.10.1/24 LANeth1 - WAN (dynamic from dhcp)I have setup /etc/etheresSERWER.MYDOMAIN.PL 00:01:02:03:04:05comp1 00:1f:d0:27:d1:beetc.

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Ubuntu Networking :: Networking 2 Computers Using A Switch?

Oct 7, 2010

I successfully installed Ubuntu 10.04 on 2 laptops (both are identical in terms of hardware). In addition, I connected both of them (using RJ45 cables) to a switch (just a switch; I don't have a router). Can anybody guide me what should I do / what settings should I specify in each laptop in order to be able to SSH from one laptop to another?

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Networking :: Allow A Certain Ip On A Certain Switch Port?

Oct 6, 2010

Server is on Port 1, with an address of 10.3.2.1.

Someone plugs into Port 2 and gives themself the same address.

That would cause problems, right?

So, is there a way, to say to the switch, "Hey, 10.3.2.1 is on Port 1, and nowhere else. Do not let anyone use the IP 10.3.2.1 on any other port, and if they do, disallow the traffic."

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Ubuntu Networking :: Need To Switch Default NIC

May 10, 2010

I have 2 NIC's in my mythbuntu 10.0.4 box, one is connected to a closed network eth0 and the other to an Internet gateway eth1.

For some reason Ubuntu always makes eth0 the default network card, even if I delete the connections and add them in different a order. Because of this I can't access the Internet w/o disabling the private network card.

I could just switch the cables over but this should be doable in software and I'd like to know how.

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Ubuntu Networking :: How To Connect To A Switch

Nov 5, 2010

I have an HP ProCurve 2424M 24 port switch and I can't access it through the browser because I can't find the IP address of the switchhave tried resetting back to factory configuration, but still can't find the IP. So I have a null-modem cable (serial) and am trying to get into the switch via the terminal. The only thing is that I don't know what commands to type? Do I need to configure the port? If so, how do I do that? I'm not necessarily a newbie to Linux, but when it comes to the terminal

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Networking :: Bridge Be Configured To Act As Hub Not A Switch?

Jun 30, 2010

I have a hub with some VoIP phones attached as well as a machine that is used to record the calls. This all works fine as all packets coming to/from the voip phones are also seen by the recorder so it can process them as necessary.

What i want to do is put another machine between the hub and recorder and have it act as a transparent firewall. So far i've managed to successfully set up a bridge on ports eth1 and eth2 and all the packets destined for the recorder go through the bridge fine. The problem is that the bridge is acting as a switch so the packets from the phones are received on eth2 but don't get retransmitted on eth1. Is there any way to configure the bridge so that all packets received on eth2 are transmitted on eth1, i.e. have it act as a hub instead?

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Networking :: Can't Switch To Wifi Connection / Fix It?

Jan 15, 2011

I am new to linux and also new to this forum. I love how light Slax is but it won't let me connect to my wifi. It scans and finds my router but the option to switch to the network is grayed out. How can I fix this problem?

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Networking :: Crossover Cat5 Vs Switch

Feb 15, 2011

got a watchguard firebox 1000 here, old tech i know, the manuals/pdfs on their site want me to use a crossover cable for the quick setup and I havent got any at the moment, but I got dozens of normal patch cables and switches. Can I use 2 patch cables on a switch to simulate a crossover cable scenario? If so ... would there be anything extra to do to make that method work? --tia

this thread indicates there is no difference other than what they mention in the thread? confirmation on that? [URL]

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Networking :: Routing On 2 Switch For Fedora?

Nov 29, 2010

I have a Pc that has 2 Ethernet and I have also 2 switch. I want the PC to become the router and be connected to 2 switch.How can I setup this one on FEDORA and I want to assigned for eth0 192.168.26.51 and eth1 192.168.22.51 for the IP.

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Networking :: Switch Eth1 To Eth0 ?

May 4, 2011

I installed Slackware 13.37 console only.

I have two ethernet cards.

I want to change eth1 to eth0 and eth0 to eth1, because I have some old firewall script and I need eth0 be eth1, because of routing internet. My ISP close my net connection on MAC adress.

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Fedora Networking :: Easiest Way To Switch Between Using One - Other Gateway?

Nov 24, 2009

I have 2 gateways on our network. What is the easiest way to be able to switch between using one or the other gateway? I am using Fedora 12 32 bit.

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Ubuntu Networking :: Switch To Turn Wifi Off And On?

Nov 9, 2010

how to make wifi work. I'm looking for a way to turn it off to save battery life. Aspire One D255, Fn F3 toggles wifi off and on, with an indicator light and, in Win 7, an on-screen indicator. Fn F3 doesn't work in Ubuntu, and there are times I'd like to turn the wifi off. Is there a command to do this?

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Ubuntu Networking :: Switch Won't Work With Machine

Dec 23, 2010

I got a Ubuntu machine running a local web server. It is connected to an archaic 10mbit hub, and I'd like a little bit faster network. I got a new 100/1000mbit switch connected to my router. I have 3 other PC's running off it, no problems at all. No configuration was necessary, and all existing cables worked fine.

Since the router and hub are located at the opposite end of the house, and the switch is in my PC room, I made up a new cable to connect it to my Ubuntu machine. It's just a straight-through cable, just like the other cables connecting the switch to other PC's. Okay so, when I plug the cable in to the machine I get no ethernet lights on either the machine nor the switch. But here's the kicker: I plug the cable into my laptop (running Windows 7), and it works perfectly. I restart the machine with the cable in, and get a green light. As soon as Ubuntu loads up, no lights, no connectivity. It shouldn't matter, but I'm running a static IP on the machine. I also have static IP's on the other PC's connected to the switch and nothing had to be changed.

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Ubuntu Networking :: Wireless Switch Not Working?

Jan 2, 2011

I just installed 10.10 on my HP dv2700 laptop and I can't get the wireless card to turn on. Here are some of my results. I get the same results regardless of which position the wireless switch is in and the indicator light always indicates that the wireless is off.

paul@paul-HLaptop:~$ iwconfig
lo no wireless extensions.
eth0 no wireless extensions.
wlan0 IEEE 802.11abg ESSIDff/any

[Code].....

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Ubuntu Networking :: Switch To Turn Wifi Off And On

Apr 2, 2011

I searched for this, and all I saw was advice on how to make wifi work. Mine works just fine, I'm looking for a way to turn it off to save battery life. Here's what I mean. Aspire One D255, Fn F3 toggles wifi off and on, with an indicator light and, in Win 7, an on-screen indicator. Fn F3 doesn't work in Ubuntu, and there are times I'd like to turn the wifi off. Is there a command to do this? Or maybe something in the menus that I'm missing?

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Ubuntu Networking :: Building A Firewall And Switch?

Apr 6, 2011

I am wanting to build myself a Linux based firewall and network switch but I am not entirely sure where to start. I would like to point out that I am aware that it would be easier and quicker to just buy a switch and use that, but this is an intellectual exercise.

What I want to do is have a NIC which has the internet coming in. The traffic is then passed through the firewall program (I think IP tables is what I should be using?).

Now my main issue is that I will have quite a few Network Interfaces to manage. The machine could easily assign IPs by DHCP and act as the DNS server but what would I need to use to share the internet connection to all the NICs? There will be at least 4 interfaces, but possibly up to 12.

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Ubuntu Networking :: Wireless LED Does Not Switch On And Work

May 11, 2011

I am new with Linux and I am trying to figure out how to get my wireless working. My wireless LED does not switch on and it also does not work. In some threads I have seen people post some outputs of command from the terminal. I do not know how to copy this because I can not use ctrl + c in the terminal.

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Ubuntu Networking :: 11.04 Wireless Hardware Switch?

May 26, 2011

I just installed Ubuntu 11.04, from Windows XP.

Ever since I have tried it, I can only connect to the internet on a wired connection, but no wireless.

It says "Wireless Connection disabled by hardware switch"

I'm not 100% sure what that means, has anyone else had this predicament?

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Networking :: Strange Martian Behavior When Using Switch Vs Hub?

May 21, 2010

I have an old PC running an older version of linux with two network cards serving as my firewall router. The network cards are netgear 310tx cards. Noticed traffic was not getting routed at times. Figured my switch was going bad, so I hooked up an old hub to keep keys systems communicating while I get a new switch. No problems with hub, but only has 5 ports.

Get new switch (different make/model from old one), install, a couple of my systems have connectivity problems, but others do not. Thinking it was a bad switch, returned it, got a new one just like my old one (which I thought was going bad, but worked for several years). Hook it up, paying attention to my firewall console and notice martian header messages. Network traffic not getting routed at all. The interface for connected to LAN was slow to get started (my firewall can communicate to the Internet, but LAN communication was hosed).

System would "hang" spitting out martian header messages until I disconnected LAN cable. Thinking network card may be bad, replaced it with another version of the same type. Same problems: martian header messages and traffic not getting routed.

HOWEVER, if I remove the switch and use my old hub, no problems. Networking appears to work for all systems connected to hub. Since I and my wife work from home, I'm using the hub right now (with non-essential systems not connected due to limited ports). I can only do any real experimentation at night.

I have no idea why things would work differently between using a hub vs a switch. Could something have gone awry with the linux kernel (2.4.20-46.7)?

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